IMO Mathematics Olympiad Class 9: Questions 214  218 of 919
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Question number: 214
» Lines, Angles and Quadrilaterals
Question
In the given figure, and . Then ∠PSX is________
Choices
Choice (4)  Response  

a.  45˚ 

b.  60˚ 

c.  155˚ 

d.  90˚ 

Question number: 215
» Lines, Angles and Quadrilaterals
Question
Diagonals of a rectangle ABCD intersect at O. if , then ∠DCO is ________
Choices
Choice (4)  Response  

a.  70˚ 

b.  55˚ 

c.  35˚ 

d.  110˚ 

Question number: 216
» Lines, Angles and Quadrilaterals
Question
In the given figure, BO, CO is angle bisectors of external angles of △ABC. Then BOC is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 217
» Lines, Angles and Quadrilaterals
Question
In the figure below, lines XY and MN intersect at O. if and, then are equal to ________
Choices
Choice (4)  Response  

a.  130˚ 

b.  90˚ 

c.  126˚ 

d.  180˚ 

Question number: 218
Question
Triangle PAB is formed by three tangents to circle with center O and, then angle ACB equals ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

